Skip to main content

NHTSA Interpretation File Search

Overview

NHTSA's Chief Counsel interprets the statutes that the agency administers and the standards and regulations that it issues. Members of the public may submit requests for interpretation, and the Chief Counsel will respond with a letter of interpretation. These interpretation letters look at the particular facts presented in the question and explain the agency’s opinion on how the law applies given those facts. These letters of interpretation are guidance documents. They do not have the force and effect of law and are not meant to bind the public in any way. They are intended only to provide information to the public regarding existing requirements under the law or agency policies. 

Understanding NHTSA’s Online Interpretation Files

NHTSA makes its letters of interpretation available to the public on this webpage. 

An interpretation letter represents the opinion of the Chief Counsel based on the facts of individual cases at the time the letter was written. While these letters may be helpful in determining how the agency might answer a question that another person has if that question is similar to a previously considered question, do not assume that a prior interpretation will necessarily apply to your situation.

  • Your facts may be sufficiently different from those presented in prior interpretations, such that the agency's answer to you might be different from the answer in the prior interpretation letter;
  • Your situation may be completely new to the agency and not addressed in an existing interpretation letter;
  • The agency's safety standards or regulations may have changed since the prior interpretation letter was written so that the agency's prior interpretation no longer applies; or
  • Some combination of the above, or other, factors.

Searching NHTSA’s Online Interpretation Files

Before beginning a search, it’s important to understand how this online search works. Below we provide some examples of searches you can run. In some cases, the search results may include words similar to what you searched because it utilizes a fuzzy search algorithm.

Single word search

 Example: car
 Result: Any document containing that word.

Multiple word search

 Example: car seat requirements
 Result: Any document containing any of these words.

Connector word search

 Example: car AND seat AND requirements
 Result: Any document containing all of these words.

 Note: Search operators such as AND or OR must be in all capital letters.

Phrase in double quotes

 Example: "headlamp function"
 Result: Any document with that phrase.

Conjunctive search

Example: functionally AND minima
Result: Any document with both of those words.

Wildcard

Example: headl*
Result: Any document with a word beginning with those letters (e.g., headlamp, headlight, headlamps).

Example: no*compl*
Result: Any document beginning with the letters “no” followed by the letters “compl” (e.g., noncompliance, non-complying).

Not

Example: headlamp NOT crash
Result: Any document containing the word “headlamp” and not the word “crash.”

Complex searches

You can combine search operators to write more targeted searches.

Note: The database does not currently support phrase searches with wildcards (e.g., “make* inoperative”). 

Example: Headl* AND (supplement* OR auxiliary OR impair*)
Result: Any document containing words that are variants of “headlamp” (headlamp, headlights, etc.) and also containing a variant of “supplement” (supplement, supplemental, etc.) or “impair” (impair, impairment, etc.) or the word “auxiliary.”

Search Tool

NHTSA's Interpretation Files Search



Displaying 14661 - 14670 of 16515
Interpretations Date

ID: nht81-1.21

Open

DATE: 03/03/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Vehtek Marketing Inc.

TITLE: FMVSS INTERPRETATION

TEXT:

March 3, 1981 NOA-30

Mr. Michael J. Klein Vice President Vehtek Marketing Inc. 2795 Townline Road Alden, New York 14004

Dear Mr. Klein:

This responds to your February 12, 1981, letter requesting information concerning any Federal requirements that would be applicable to a water injection system used to increase the efficiency of vehicle fuel systems. Your company's water injection system is sold as aftermarket equipment which is attached to a vehicle's carburetor to increase gas mileage.

For your information, I am enclosing a synopsis of agency interpretations which sets forth the general Federal implications of installing auxiliary fuel tanks in vehicles or of converting vehicle fuel systems. This information explains in detail the responsibilities of a manufacturer under the National Traffic and Motor Vehicle Safety Act, as amended 1979 (15 U.S.C. 1381, et seq.), in relation to a vehicle's fuel system. Although your product is not an auxiliary gas tank and does not require a conversion of the fuel system, the stated principles are applicable to your product since it is motor vehicle equipment. Following is a summary of the most pertinent aspects of that material as it relates directly to your water injection system.

Safety Standard No. 301, Fuel System Integrity, is applicable only to completed new vehicles and would, therefore, not be directly applicable to your motor vehicle equipment. It may be indirectly applicable, however. The standard specifies performance requirements for fuel systems by limiting the amount of fuel leakage which may occur after a barrier impact crash test of the vehicle. Section 108(a)(2)(A) of the Vehicle Safety Act specifies that no manufacturer, distributor, dealer or motor vehicle repair business shall knowingly render inoperative, in whole or part, any device or element of design installed on or in a motor vehicle in compliance with an applicable Federal motor vehicle safety standard. Any of these persons would be prohibited from installing your product on a vehicle fuel system if that installation would cause the vehicle to no longer be in compliance with Safety Standard No. 301. Since your letter indicates that the water injection system is not directly attached to a vehicle's fuel system, it is not likely that installation of the product would render inoperative the vehicle's compliance with Safety Standard No. 301. However, your company will have to determine whether in fact the installation would affect compliance. I have enclosed a copy of Safety Standard No. 301 for your information.

Under 49 CFR Part 579, your water injection system would be considered "motor vehicle replacement equipment." Part 579 places the responsibility for safety defects in performance, construction components, or materials of motor vehicle replacement equipment on the manufacturer of such equipment. Under section 108(a)(1)(D) and 109(a) of the Vehicle Safety Act, any manufacturer who fails to provide notification of or remedy for a safety defect in its motor vehicle equipment is liable for a civil penalty of up to $1,000 for each violation. Therefore, it is your responsibility to determine that your water injection system contains no safety-related defects. For example, if your system would cause a vehicle's engine to stall, this could be considered a safety defect by the agency.

In closing, I would state that you do not need any prior approval from the agency before marketing your product. All the responsibilities under the Vehicle Safety Act are placed directly on the manufacturer. I hope you will find this information helpful. Please contact Hugh Oates of my office if you have any further questions (202-426-2992).

Sincerely,

Frank Berndt Chief Counsel

Enclosures

February 12, 1981

Frank Berndt Office of Chief Consul National Highway Traffic Safety Administration 400 7th. Street - South-West Washington, D.C. 20590

Dear Mr. Berndt,

As per my telephone conversation Wednesday, February 11th, 1981, with Steven Wood, I am writing concerning a water injection system we manufacture for automotive use. We recently had some experience with State of New York owned vehicles where we were told that we need D.O.T. approval in order to be legal.

After two days of long distance telephone calls I reached your office. I was told that our situation may involve standard 301, and to mention that to you. Also let me state that we do not tap into the gasoline system or its passage.

Our system is relatively simple in operation. It was patented in 1973 (patent number 3778039) by its inventor, Al Dore, who worked with venter injection since the 1930's. We insert into the boost venturi of the carburetor a brass tube through which the water is drawn in - in much the same way as the gasoline is drawn in - the greater the engine speed, the greater the amount of water. We have a water reservoir mounted in the vehicles engine compartment which when low on water activates a water pump which draws water from a five gallon (D.O.T. 2E rated) container which is mounted, at the customers discretion, in a remote location. I have enclosed a brochure which depicts the system as I have described it. I would like to add that by design no water is drawn into the engine at speeds of below approximately 1500 RPM, as a safety precaution. The system is much more sophisticated than I describe, but for purposes of explanation that is how it works. It uses water at about the rate of one gallon of water to twenty gallons of gasoline.

We have several testimonial letters attesting to considerable mileage increase; above 10%. Most of these average 30%. We give a written money back guarantee of a minimum of a 10% increase in gas mileage! No other water injection manufacturer gives a similar warranty, and there are approximately forty-two other units on the market today. We know our unit works and we're proud to be manufacturing an American made energy saving device. I would appreciate your written comments at your earliest convenience so we may pursue government owned vehicles with the confidence of being legal. I would like to extend my appreciation for your time and efforts.

Sincerely,

Michael J. Klein, Vice President

MJK/JR

ID: nht81-1.22

Open

DATE: 03/03/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Carbonneau & Turgeon Inc.

TITLE: FMVSS INTERPRETATION

TEXT:

Mar 3, 1981 NOA-30

Mr. Wilfrid Carbonneau President Carbonneau & Turgeon Inc. 4E, Ave Centre Industriel St-Romuald, CTE Levis, P.Q.

Dear Mr. Carbonneau:

In response to your recent letter, to Mr. Schwartz of my office, I have enclosed a copy of U.S. Federal Motor Vehicle Safety Standard No. 115, and two recent amendments. The Canadian authority for the issuance of the three or six character manufacturer identifier is:

MVMA of Canada Suite 1602 25 Adelide Street E. Toronto, Ontario MSC-1Y7 ATT: Mr. Brian Hickey Phone: 416-364-9333

Sincerely,

Frank Berndt Chief Counsel

Enclosures

ST-ROMUALD, le, 6 fevrier 1981

M. Frederic Schwartz, junior National Highway Traffic Safety Administration 400, Seventh Street, S.W.

Washington, D.C., 20590

U.S.A.

Monsieur,

Auriez-vous l'obligeance de m'envoyer de plus amples details au sujet de la nouvelle norme americaine, la FMVSS 115.

Vous remerciant a l'avance de votre attention, veuillez agreer, Monsieur, l'expression de nos sentiments les meilleurs.

Bien a vous,

CARBONNEAU & TURGEON INC.

Par: Wilfrid Carbonneau President

WC/cc

ID: nht81-1.23

Open

DATE: 03/03/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: T. J. Welding Ltd.

TITLE: FMVSS INTERPRETATION

TEXT:

MAR 3 1981

NOA-30

Miss M. J. Riddle T. J. Welding Ltd. Box 98 Mount Albert, Ontario LOG 1M0

Dear Miss Riddle:

In response to your recent letter, to Mr. Schwartz of my office, I have enclosed a copy of U.S. Federal Motor Vehicle Safety Standard No. 115, and two recent amendments. The Canadian authority for the issuance of the three or six character manufacturer identifier is:

MVMA of Canada Suite 1602 25 Adelide Street E. Toronto, Ontario M5C-1Y7 ATT: Mr. Brian Hickey Phone: 416-364-9333

Sincerely,

Frank Berndt Chief Counsel

Enclosures

January 22, 1981

Mr. Frederic Schwartz, Jr. National Highway Traffic Safety Administration 400 Seventh Street S.W. Washington, D.C. 20590 U.S.A.

Dear Sir:

Your name has been given to us by Transport Canada - Surface concerning obtaining further details on your standard for a seventeen digit vehicle identification number, standard FMVSS 115.

Any information you can supply us with concerning this, will be appreciated.

Sincerely,

Miss M. J. Riddle T. J. Welding Ltd.

ID: nht81-1.24

Open

DATE: 03/03/81

FROM: AUTHOR UNAVAILABLE; Stanley H. Backaitis; NHTSA

TO: Alderson Research Tabouletiones

COPYEE: MR. ARMSTRONG; MR. FINKELSTEIN; MR. STEPHENSON; MR. OATES

TITLE: FMVSR INTERPRETATION

ATTACHMT: 3/7/80 letter from Frank Berndt (NHTSA) to Fiat Motors of North America (Std. 208)

TEXT: Per your telephone request of March 3, 1981, enclosed is a copy of a letter of interpretation on dummy shoes sizes which was written to Fiat Motors of North America on March 7, 1980. As you indicated in your telephone call, the above interpretation responds satisfactorily to the needs outlined in your January 30, 1981, letter to this Agency.

ALDERSON RESEARCH LABORATORIES. INC.

January 30, 1981

Stanley H. Backaitis National Highway Traffic Safety Admin.

DEAR STAN:

From time to time over the past few years, some of our overseas customers have asked us to obtain for them shoes which meet Section 8.19 of the Part 572 test dummy requirements. As you are aware, this calls for Size 11-EE shoes meeting the configuration, size, sole and heel thickness specifications of MIL-S-13192, with a weight of 1.25 +/- .2 pounds. In the past we have been able to obtain these from a firm named Altama Delta Corporation, in Darien, Georgia. However, this week they advised us that they no longer have a Government contract to produce shoes to this specification and they could not advise us of any other firm currently producing this type shoe.

We have been in touch with the Bostonian/Hanover Shoe Company, as well as the Freeman Shoe Company in Wisconsin. In both instances, we have been advised that they make what they call a military shoe which they distribute through PX stores, but neither source could advise us as to how closely their products compared to the MIL Spec. requirements.

I would appreciate your advising us in the event that you are able to locate a source for the shoes which meets Part 572 as currently written. If not, would it be possible to amend the Part 572 wording so it would coincide with what is currently available in the marketplace.

SINCERELY,

Alan H. Raphael President

ID: nht81-1.25

Open

DATE: 03/05/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Gillig Corp.

TITLE: FMVSS INTERPRETATION

TEXT:

FMVSS INTERPRETATION Mr. Roy O. Smith

Manager of Body Design Gillig Corporation Box 3008 Hayward, California 94540

Dear Mr. Smith:

This responds to your letter of November 20, 1980, inquiring about Federal Motor Vehicle Safety Standard No. 101, Controls and Displays. You asked for our confirmation that a foot-operated turn signal control on your new transit bus is not subject to the identification requirements of Section S5.2.1.

The identification requirements of Section S5.2.1 of Safety Standard No. 101 are applicable to "hand operated" controls. Since the turn signal control on your new transit bus is foot operated, those requirements are not applicable. Since the standard does not include any other identification requirements for turn signal controls, your conclusion stated above is correct.

While the identification requirements of Section S5.2.1 are not applicable to your transit bus, you may wish to identify the turn signal control in some manner in order to prevent confusion when persons unfamiliar with foot-operated turn signal controls operate your transit bus.

The agency is currently conducting research on the standardization of the location of critical controls, including the turn signal control. We would appreciate receiving information as to why you are locating the turn signal control on the floor when the vast majority of other vehicles have the control mounted as a stalk on the steering column.

We would also note that Standard No. 101's display requirements for turn signals are applicable to your transit bus if it has a GVWR of under 10,000 pounds. Also Safety Standard No. 108, Lamps, Reflective Devices, and Associated Equipment, includes other requirements related to turn signals.

Sincerely,

Frank Berndt Chief Counsel

November 20, 1980

Mr. Frank Berndt CHIEF COUNSEL U.S. DEPARTMENT OF TRANSPORTATION NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION 400 Seventh Street, S.W. Washington, D.C. 20590

Dear Mr. Berndt:

On our new transit bus, we use foot actuated push buttons to operate the turn signals. Section S5.2.1, (a) of Federal Motor Vehicle Safety Standard 101-80, requires that "Any hand operated control listed in column 1 of Table I that has a symbol designated in column 3 shall be identified by that symbol".

Since our turn signal control is foot operated, not hand operated, it is our opinion that this requirement does not apply to our arrangement. Your comments would be appreciated.

Very truly yours,

GILLIG CORPORATION

Roy O. Smith

Manager of Body Design

ROS:1r

ID: nht81-1.26

Open

DATE: 03/05/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Travel Accessories, Inc.

TITLE: FMVSS INTERPRETATION

TEXT:

FMVSS INTERPRETATION Mr. Ed Detwiler President Travel Accessories, Inc. P.O. Box 248 Orland, CA 95963

Dear Mr. Detwiler: This is in reply to your letter of February 12, 1981 with reference to the automotive aftermarket cruise control device offered by a competitor of yours which you believe does not comply with paragraph SS.3.1 of Standard No. 101.

That section, in pertinent part and in conjunction with Table 1 requires the illumination of the identification of automotive vehicle speed controls that are hand-operated if located other than on the floor, floor console, steering column or in the windshield header area. You have told us that the installation instructions advise that the control module "be mounted on the automobile's dashboard or console, as well as the steering column, the dashboard listed as being the preferred location."

Standard No. 101 is intended to apply to vehicles as delivered to their purchasers, rather than to individual aftermarket equipment items installed on them. If the device you describe is added after first purchase of the vehicle for purposes other than resale, there is no requirement that the device comply with Standard No. 101. If it is added before such purchase, the dealer selling the vehicle would have the legal responsibility of insuring that the identification of any dashboard mounted control was illuminated. We do not require a separate lamp for each control, and ambient illumination provided by lights for other controls could be sufficient to meet the requirements.

Under the circumstances, the manufacturer or importer of the device you describe would not appear to be in violation of Standard No. 101.

Sincerely,

Frank Berndt Chief Counsel

February 12, 1981

Mr. Frank Berndt U. S. Department of Trasportation 400 Seventh Street S.W. Washington, D.C. 20590

Dear Mr. Berndt:

I would like to notify your agency that at present an automotive aftermarket cruise control device is being marketed in this country which is in direct violation of the Federal Motor Vehicle Safety Standard No. 101, section 5.3.1.

The unit in question is called the Zemco Zt and Zemco Ztll currently marketed by Zemco, Inc. 12907 Alcosta Blvd. , San Ramon, California. These wits feature a control module , which according to the manufacturer' s installation instructions ad advertising materials is designed to be mounted on the automobile's dashboard or console , as well as the steering column, the dashboard listed as being the preferred location. This control module is not illuminated as required under the aforementioned standard.

The result of this violation is obvious. When the module is installed as recommended, it becomes a safety hazard. Travel Accessories, Inc., as a domestic manufacturer of a electronic cruise control which is in full accord of all U. S. Department of Transportation safety standards , objects that this product which is manufactured in Taiwan be allowed to be continued to be sold in this country while in obvious violation of our own government's regulations.

Continued condoning of this violation perpetuates a unfair competitive advantage. Zemco, Inc. currently enjoys a pricing advantage over Travel Accessories and other domestic manufacturers of this product category because of lower costs of materials and labor by not having to meet U.S. standards.

Travel Accessories, Inc. owns two plants in the United States totalling over 150,000 square feet and employing in excess of two hundred and fifty people. We have spent over a three year period of research and development and a great deal of funds bringing to market a quality piece of merchandise which complies with all of our own government regulations at what we believe to be a fair ad equitable price. file are forced to meet stringent government requirements ad standards in those countries we attempt to export to, only to find that a product such as this finds its way into our own domestic channels of distribution unregulated, with a minimal investment.

We request that the department of transportation take immediate action to have existing inventories of this product upgraded to meet all safety standards of the U. S. Department of Trade and further requires all future shipments of product received in this country to meet those stated requirements, as well.

I await your earliest response.

Sincerely,

Ed Detwiler President ED/sv

ID: nht81-1.27

Open

DATE: 03/05/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Toler & Associates

TITLE: FMVSR INTERPRETATION

TEXT:

March 5 1981

NOA-30

Mr. Bob Toler, Jr. Toler & Associates P.O. Box 43117 Birmingham, Alabama 35243

Dear Mr. Toler:

This responds to your letter of January 5, 1981, requesting information about Federal regulations which apply to Ready-Mix Concrete Trailers with a GVWR of 5,000 pounds and a Dico #6 drop surge actuator hydraulic brake system.

The National Highway Traffic Safety Administration issues safety standards for "motor vehicles." A trailer is generally considered to be a "motor vehicle" if the manufacturer expects that it will use public highways as part of its intended function. We have enclosed a pamphlet prepared by the agency which more fully discusses the meaning of "motor vehicle."

Mr. Bloom has informed this office that in discussing with you the applicability of Federal motor vehicle safety standards, he meant only to indicate that Safety Standard No. 105, Hydraulic Brake Systems, does not apply to trailers. The following safety standards issued by this agency do apply to trailers: Safety Standard No. 106, Brake Hoses; No. 108, Lamps, Reflective Devices, and Associated Equipment; No. 115, Vehicle Identification Number; No. 116, Motor Vehicle Brake Fluids; No. 119, New Pneumatic Tires for Vehicles Other Than Passenger Cars; No. 120, Tire Selection and Rims for Motor Vehicles Other Than Passenger Cars; and No. 121, Air Brake Systems. The air brake standard would not, of course, apply to a hydraulic braked trailer.

A manufacturer of a trailer is required to certify the compliance of the trailer to these Federal safety standards. Part 566 of our regulations, Manufacturer Identification (49 CFR 566), specifies information which must be submitted to the NHTSA by manufacturers of motor vehicles, including trailers. Part 567, Certification (49 CFR 567), specifies the content of the certification label or tag that must be attached to motor vehicles regulated by our standards.

We have enclosed a pamphlet prepared by the agency which gives a brief summary of the requirements and applicability of each of the Federal motor vehicle safety standards (issued as of August 1978). However, because of the volume of these standards, we do not provide copies directly. We have enclosed an information sheet which explains how you can obtain up-to-date copies of our standards and other regulations.

In addition to our regulations, you may also wish to check the applicability of safety regulations issued by the Bureau of Motor Carrier Safety. Unlike our regulations, which apply to all motor vehicles, Bureau of Motor Carrier Safety regulations essentially only apply to vehicles used in interstate commerce. For example, if a customer plans to use one of your trailers for work in more than one State, the trailer should meet Bureau of Motor Carrier Safety regulations. For more information about the applicability and content of these regulations, we suggest that you write the Bureau of Motor Carrier Safety at the following address:

Bureau of Motor Carrier Safety Federal Highway Administration 400 7th Street, S.W. Washington, D.C. 20590

Sincerely,

Frank Berndt Chief Counsel

Enclosures

January 5, 1981

NHTSA Office of Chief Counsel 400-7th Street SW Washington, D. C. 20590

Re: Federal Regulations Regarding Concrete Trailers with Brakes Hydraulic

Gentlemen:

On December 28, 1980, I talked to Vern Bloom with the Department of Transportation in Washington, D. C. regarding the above reference.

We are in the process of manufacturing Ready-Mix Concrete Trailers with a GVWR of 5,000 pounds and a Dico #6 drop surge actuator hydraulic brake system. Mr. Bloom said D.O.T. had no regulations on the above trailer.

To insure we manufacture according to regulations please send a letter regarding verification of no regulations or regulations we need to comply with.

Your prompt attention and reply is appreciated.

Sincerely,

Bob Toler, Jr.

BT,jr./bt

ID: nht81-1.28

Open

DATE: 03/05/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Smith Industries Ltd.

TITLE: FMVSS INTERPRETATION

TEXT:

NOA-30

Mr. W. W. Bischoff Divisional Technical Director Smith Industries Limited Vehicle Instrumentation Division Cricklewood Works, London, England NW2 6NN

Dear Mr. Bischoff:

This responds to your letter of January 28, 1981 to John W. Carson regarding Safety Standard No. 127, Speedometers and Odometers. You asked whether the encapsulation requirements of this standard (S4.2.5.2) are satisfied if a speedometer is housed in a metal case and sealed by a window and a spun-over metal bezel.

The National Highway Traffic Safety Administration (NHTSA) does not offer prior approval of compliance of any vehicle or equipment design with any safety standard before the manufacturer's certification of its product. It is the manufacturer's responsibility under the National Traffic and Motor Vehicle Safety Act of 1966 (15 U.S.C. S1381 et seq.) to determine whether its vehicle or equipment complies with all applicable safety standards and regulations and to certify its vehicle or equipment in accordance with that determination.

The agency is willing to offer an opinion on whether a vehicle or motor vehicle equipment complies with a particular rule. Such an opinion is not binding on the agency or on the manufacturer. However, the information you have provided in your letter does not give us a sufficient basis on which to form an opinion. We must see the equipment in question, or at least pictures or drawings of the equipment design, to render a judgment.

Please contact this office if you have more questions.

Sincerely,

Frank Berndt Chief Counsel

28th January 1981

Mr. John W. Carson, Office of Vehicle Safety Standards, N.H.T.S.A. 400 Seventh Street SW Washington DC 20590

Dear Sir,

Re: FMVSS 127, Speedometers and Odometers Final Rule (Docket 76-06, Notice 9)

Please advise by return whether the odometer tamper resistant requirement is satisfied relative to the 'Access to the odometer requirement', for a speedometer housed in a metal case and sealed by a window and spun over metal bezel.

Thank you.

Yours truly, for: Smiths Industries Limited

W.W. BISCHOFF Divisional Technical Director

ID: nht81-1.29

Open

DATE: 03/05/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Wesbar Corporation

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letter of January 30, 1981. According to your letter, you have been told that Federal motor vehicle safety standards are only "Federal Specifications" and not considered to be "Federal laws". You have heard it said that a "side marker lamp is not an 'illegal lamp'" simply because it does not meet the photometric requirements specified in Table 3, Column 5 of DOT 108 (SAE J592e July 1972). You have asked our opinion on the matter.

We are glad to set the matter straight. The Federal motor vehicle safety standards are regulations issued by the National Highway Traffic Safety Administration, an agency of the Department of Transportation, in implementation of the National Traffic and Motor Vehicle Safety Act of 1966. In that Act, Congress provided this agency with authority to specify requirements to be met by motor vehicles and equipment, and these requirements have the force of Federal law. The Act provides for a civil penalty and injunctive sanctions if the standards and other implementing regulations are not met. It is unimportant what people call the Act and standards, as long as they realize their purpose and the consequences of noncompliance.

Standard No. 108 is unusual in that it only requires that lighting equipment be designed to conform, rather than per se conform. In this sense, the failure of a single side marker lamp to meet the photometric requirements incorporated into Standard No. 108 may not necessarily be considered a noncompliance but a larger number of failing lamps could cause NHTSA to question the adequacy of the lamp's design and conclude that a noncompliance existed meriting notification and remedy.

I hope that this explanation is helpful to you.

SINCERELY,

January 30, 1981

Frank Berndt, Chief Counsel National Highway Traffic Safety Administrator

Dear Mr. Berndt:

We have been told that Department of Transportation standards, and specifically DOT 108, are only "Federal Specifications" and are not now and have never been considered to be federal laws.

We have read comments made to this effect and have heard it said that a side marker lamp is not an "illegal lamp" simply because it does not meet the photometric requirements specified in Table 3, Column 5 of DOT 108 (SAE J592E July 1972).

Would you be kind enough to forward to me NHTSA's opinion on this matter.

Your early response is most urgently requested.

WESBAR CORPORATION

Bernard R. Weber Senior Vice President

ID: nht81-1.3

Open

DATE: 01/13/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: MMC Services Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your letter of October 14, 1980, regarding the warning devices required by Safety Standard No. 114, Theft Protection, and Safety Standard No. 208, Occupant Crash Protection. You ask whether the sound of a voice repeating the phrase "please pull out the ignition key" or "please fasten seat belt" at 2-3 second intervals could be used to satisfy the requirements of Standard No. 114 and Standard No. 208. You also ask whether a buzzer or chime that signals an unfastened seat belt or the presence of the key in the ignition could also be used to give the driver other warnings, such as turning off the headlights.

Standard No. 114 does not specify the nature of the warning that must be given to the driver in the event that the ignition key is left in the locking system. Thus the system you describe would comply with the rule. Note that the signal must be activated whenever the key has been left in the ignition and the driver's door is opened.

Standard No. 208 requires that the driver's seating position be equipped with a warning system that activates a continuous or intermittent audible signal for a period of not less than four (4) seconds and not more than eight (8) seconds. The signal must begin when the vehicle's ignition switch is in the "on" or "start" position and the driver's belt is not in use. If the system you have devised stops the warning only when the belt has been fastened, it would not comply with this rule. The signal must end within eight (8) seconds, irregardless of whether the driver's belt has been fastened. Regarding your specific question, an audible "voice" signal would be permitted under the standard.

The buzzers or chimes that are installed in accordance with Standard No. 214 or Standard No. 208 may also be used to warn the driver of other conditions.

We hope you find this information helpful. Please contact this office if you have any other questions.

Sincerely,

ATTACH.

MITSUBISHI MOTORS CORPORATION

October 14, 1980

Chief Counsel -- National Highway Traffic Safety Administration

Dear Sir;

Subject: Warning Device for FMVSS 114 and 208

This letter is for getting your interpretation to the following questions concerning the warning devices required by FMVSS 114 and 208.

1. Is it considered as complying with the requirements to use the voice sound such as "please pull out ignition key" or "please fasten seat belt" which is activated repeatedly with 2 or 3 seconds pause?

In order to avoid customers' unpleasant impression due to abrupt cut-off of the voice when the instruction is followed, these warning voices would be ceased after completing the phrase.

2. In case when adopting buzzer or chime sound as the warning of FMVSS 114 or 208, could the same sound be utilized as other additional warnings such as the headlamp turning-off?

For any questions regarding this letter, please contact with the following representative of ours in the U.S.A. and mail your response to him.

T. Shimada -- Senior Technical Manager, MMC Services Inc.; 3000 TOWN CENTER; SUITE 1960; SOUTHFIELD, MICHIGAN 48075; TELEPHONE NUMBER: 313/353-5444

Your early response would be highly appreciated.

Very truly yours,

Hidemi Ohya, Manager -- Homologation & Technical Liaison Section, Technical Administration Department

Request an Interpretation

You may email your request to Interpretations.NHTSA@dot.gov or send your request in hard copy to:

The Chief Counsel
National Highway Traffic Safety Administration, W41-326
U.S. Department of Transportation
1200 New Jersey Avenue SE
Washington, DC 20590

If you want to talk to someone at NHTSA about what a request for interpretation should include, call the Office of the Chief Counsel at 202-366-2992.

Please note that NHTSA’s response will be made available in this online database, and that the incoming interpretation request may also be made publicly available.

Go to top of page